v0.2.0 - Always-on services panel with per-service host config

Dashboard:
- New 'Always-on services' section with cards for Parakeet and Magpie
- Each card: host:port, model loaded, status pill (Healthy/Unhealthy/Starting/Not configured)
- Start, Restart, Stop buttons. Buttons disabled when not applicable for current state
- Restart counter shown when > 1 (would have surfaced the old magpie crash loop)

Backend:
- New /api/services GET: docker container state + http health for each support service
- New POST /api/services/{name}/{action} for start | stop | restart
- services.py module: docker_state, run_action via SSH
- config.py: PARAKEET_HOST/USER/CONTAINER and MAGPIE_* env vars, default to spark2_*
- health.py: use per-service hosts (no longer hard-wired to spark2_host)

Package:
- sparkConfig.yaml.ts: add 6 new optional fields
- configureSparks action: optional 'Parakeet host', 'Parakeet container', 'Magpie host', 'Magpie container' fields; descriptions explain they default to Spark 2 when blank
- Handler normalizes nulls to empty strings before merge
- main.ts: pass new env vars to container
- bump to 0.2.0:0

image/app/config.py

@@ -29,6 +29,12 @@ class Settings:
     spark1_user: str
     spark2_host: str
     spark2_user: str
+    parakeet_host: str
+    parakeet_user: str
+    parakeet_container: str
+    magpie_host: str
+    magpie_user: str
+    magpie_container: str
     ssh_key_path: str
     ssh_known_hosts: str
     models_yaml: str
@@ -39,11 +45,20 @@ class Settings:
 
     @classmethod
     def from_env(cls) -> "Settings":
+        spark2_host = _env("SPARK2_HOST")
+        spark2_user = _env("SPARK2_USER")
+        # Parakeet and Magpie default to Spark 2 unless explicitly overridden.
         return cls(
             spark1_host=_env("SPARK1_HOST"),
-            spark1_user=_env("SPARK1_USER", "<spark-user>"),
-            spark2_host=_env("SPARK2_HOST"),
-            spark2_user=_env("SPARK2_USER", "<spark-user>"),
+            spark1_user=_env("SPARK1_USER"),
+            spark2_host=spark2_host,
+            spark2_user=spark2_user,
+            parakeet_host=_env("PARAKEET_HOST") or spark2_host,
+            parakeet_user=_env("PARAKEET_USER") or spark2_user,
+            parakeet_container=_env("PARAKEET_CONTAINER", "parakeet-asr"),
+            magpie_host=_env("MAGPIE_HOST") or spark2_host,
+            magpie_user=_env("MAGPIE_USER") or spark2_user,
+            magpie_container=_env("MAGPIE_CONTAINER", "magpie-tts"),
             ssh_key_path=_env("SSH_KEY_PATH"),
             ssh_known_hosts=_env("SSH_KNOWN_HOSTS"),
             models_yaml=_resolve_models_yaml(),